As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT ROTATION, NR 1 ENGINE AMBER "FILTER BYPASS" LIGHT ILLUM FOR THREE SECONDS, THEN LIGHT EXTINGUISHED AND ILLUMINATED DESCENDING THRU FL 300 AT FLT IDLE NO THER PROBLEMS WITH NR 1 ENGINE FUEL SYS OF FLOW NOTED. ACFT GROUNDED. INTERROGATED CDU FOUND MAINTENANCE MESSAGE 73-31071 ON NR 1 ENGINE IAW FIM TASK 73-31, TASK 802. REPLACED FUEL FILTER DIFFERENTIAL PRESSURE SWITCH IAW AMM 73-34-01/401. REPLACED FUEL FILTER IAW AMM TASK 73-11-02/ 401. LEAK CHECKED GOOD.